[Bug tree-optimization/64421] New: Incorrect vector function name generated for log

[Bug tree-optimization/64421] New: Incorrect vector function name generated for log

[andrew.n.senkevich at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64421

            Bug ID: 64421
           Summary: Incorrect vector function name generated for log
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: andrew.n.senkevich at gmail dot com

Created attachment 34340
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34340&action=edit
reduced test

Hi,

compilation failed with the following code in log.c:
#include <math.h>

#pragma omp declare simd notinbranch simdlen(2)
extern double log (double);

int N = 3200;
double b[3200];
double a[3200];

int main (void)
{
  int i;

#pragma omp simd
  for (i = 0; i < N; i += 1)
  {
    b[i] = log (a[i]);
  }

  return (0);
}

gcc log.c -fopenmp -ffast-math -O1
/tmp/ccjc6yPN.s: Assembler messages:
/tmp/ccjc6yPN.s:37: Error: invalid operands (*UND* and *UND* sections) for `*'

gcc log.c -fopenmp -ffast-math -O1 -S
cat log.s
. . . . .
        call    _ZGVbN2v_*__log_finite
. . . . .

It seems because of wrong asm keyword handling, reduced test is:
#pragma omp declare simd notinbranch simdlen(2)
extern double log (double) __asm__ ("" "__log_finite") __attribute__
((__nothrow__ , __leaf__));

int N = 3200;
double b[3200];
double a[3200];

int main (void)
{
  int i;

#pragma omp simd
  for (i = 0; i < N; i += 1)
  {
    b[i] = log (a[i]);
  }

  return (0);
}

gcc -v
. . . . .
Target: x86_64-unknown-linux-gnu
. . . . .
gcc version 5.0.0 20141226 (experimental) (GCC)

[Bug tree-optimization/64421] Incorrect vector function name generated for log

[andrew.n.senkevich at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64421

Andrew Senkevich <andrew.n.senkevich at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at redhat dot com

--- Comment #1 from Andrew Senkevich <andrew.n.senkevich at gmail dot com> ---
Any plans to fix it for upcoming release?

[Bug middle-end/64421] Incorrect vector function name generated for log

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64421

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2015-01-26
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 34570
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34570&action=edit
gcc5-pr64421.patch

Untested fix.

[Bug middle-end/64421] Incorrect vector function name generated for log

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64421

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Jan 26 21:28:57 2015
New Revision: 220137

URL: https://gcc.gnu.org/viewcvs?rev=220137&root=gcc&view=rev
Log:
    PR middle-end/64421
    * omp-low.c (simd_clone_mangle): If DECL_ASSEMBLER_NAME starts
    with asterisk, skip the first character.

    * gcc.dg/vect/pr64421.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr64421.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/omp-low.c
    trunk/gcc/testsuite/ChangeLog

[Bug middle-end/64421] Incorrect vector function name generated for log

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64421

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.

[Bug middle-end/64421] Incorrect vector function name generated for log

[andrew.n.senkevich at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64421

Andrew Senkevich <andrew.n.senkevich at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #5 from Andrew Senkevich <andrew.n.senkevich at gmail dot com> ---
Thank you!

[Bug middle-end/64421] Incorrect vector function name generated for log

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64421

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sun Feb  1 17:34:50 2015
New Revision: 220325

URL: https://gcc.gnu.org/viewcvs?rev=220325&root=gcc&view=rev
Log:
    Backported from mainline
    2015-01-26  Jakub Jelinek  <jakub@redhat.com>

    PR middle-end/64421
    * omp-low.c (simd_clone_mangle): If DECL_ASSEMBLER_NAME starts
    with asterisk, skip the first character.

    * gcc.dg/vect/pr64421.c: New test.

Added:
    branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/vect/pr64421.c
Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/omp-low.c
    branches/gcc-4_9-branch/gcc/testsuite/ChangeLog